... tube 2)High-power, high-efficiency heat source 3)Instant heat 4)Easy control,Economical 5)CE,ROHS carbon tubeCertificate CE, ... export carton Lamp FeaturesHalogen type, avoid blackening of the tube and consequently infrared depreciation through their whole life timeHigh ... more. These are halogen lamps, which means that tube blackeningand resulting reduction in Infrared output are negligible, ensuring ...